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Finding the Fourth Proportional to 425,463.22, 587,128.41 and 231,875.90

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Solution

The fourth proportional to 425,463.22, 587,128.41 and 231,875.90 is: 319,982.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,463.22 : 587,128.41 = 231,875.90 : x
  2. Step 2: Convert to fraction form
    425,463.22/587,128.41 = 231,875.90/x
  3. Step 3: Cross multiply
    425,463.22x = 587,128.41 × 231,875.90
  4. Step 4: Simplify right side
    425,463.22x = 136,140,928,484.32
  5. Step 5: Solve for x
    x = 136,140,928,484.32/425,463.22
  6. Step 6: Final answer
    x = 319,982.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.